Sucker-rod hanger



Aprl 27 1926. 1,582,224 G. H. PROUT A sUcKER ROD HANGER Filed Feb. 131924 Wwf/W Patented Apr. 27,l 1926.

GEORGE H. PROUT, 0F Los ANGELES, CALIFORNIA.

SUCKEReROD HANGER.

VApplication. led February 13, 1924. Serial o. 692,484.

To ZZ whom t may concern: n

Be it known that I, GEORGE H. FRoU'r, a citizen of the United States,residing at Los Angeles, in the county of Los Angeles,

State of` California, have invented a new and useful Sucker-Rod Hanger,of. which the following is a specification.

This invention relates to pumping equip ment of the character used inpumping oilI and water from ldeep wells. Y

The polish rod `from-which extends the string of sucker rods leadingtothe pump plunger, projects vertically upward from the stuiiing boX ofthe tubing head. 'This polish rod should be reciprocatedin a verticaldirection without flexure. The present v common form of reciprocatingmeans used for voil wells-consists of a horizontal walking beam which,is pivoted at the center thereof and has the rearward `end linked byayconnecting rod' to a crank associated with lthe band wheel. 'At theforward `end of the walking beam, a hanger is employed which makespivotal `connection withthe polish rod. Owing to the fact that thewalking beam is` pivoted, the reciprocation of the forward end thereoffollowsan arcuated 'path generated about the po-int of pivot of thewalking beam. This curved movement of the upper end of the hanger causesthe sucker rod to be bent to the side at each reciprocation.l Thiscausesconsiderable strain on the sucker rod and produces apreponderanceof wear on one side'theregf which results in leakage of the stuffing litis a principal object of my-invention to provide a simple means forreciprocating the sucker rod in substantially vertical alignment so thatexcessive lexurewill not be placedxtherein asV now done by the use ofthe ordinary type of sucker rod hanger.

It is a further object of ythe invention to make the hanger in such formthat it may be quickly removed from the 'walking beam withoutnecessityofy removing bolts or nuts.

Referring to the drawings'which are for illustrative purposes only,

Fig. 1 is an elevational view showing an embodimentof my invention.

Fig. 2 is a view taken from the line 2-2 ofF1g. 1.

Fig. 3 is .a diagrammatic' view re resenting the action produced inthesuc er`rod hanger.

wardly from the outer ends thereof.

As shown in Figs. 1 and 2, my invention employs a mounting plate 1,1which has extending trunnions 12 and which is placed on the forward end13 of a walking beam 14a The plate portion 15 of the member 1l hasdownwardly` extending dogs 17 which project Yinto the wood of thewalking beam and prevent lateral ,displacement vof the member 11. Fromthe trunnion 12, a hanging means L preferably in the form of straps 20,extends downwardly and is received upon a shaft 21. From the shaft 21,further suspending -means which vmay also bemetal straps 22 areemployedfor supporting a sucker rod yoke 2a having acentral opening throughwhich the sucker rod upwardly pro-jects as shown in Fig. 2, and havingfiat upperl and lower faces against which the sucker rod clamps 25 maybear. On the -under sloping face 27 of the walking beam 14, a fixture 2Sis placed. This fixture employs a plate 29 arranged to rest against theface 27 and diagonally extending arms 30 which arey parallel in disposaland have slots 31 cut 1igne.. tween the shaft 21 which is situated atthe lower end of the suspending means formed of the members 2O and thefixture 28, there extends a strut member 33 comprisedy of 4a pair ofsubstantially rigid diagonal bent bars 34 which eXtend in the sameinclined head-between the arms 30 of the fixture 23 and V,are equippedwith a projecting pin 37 which engages the slots 31. The action producedby this construction will be made evident from Fig. 3. Tn Fig. 3, thewalking beam 14 is diagrammatically indicated. This walking beam ispivoted'at 40 on the top `of a post 41. When the walking beam isreciprocated bythe link 42, any point 'in the walking beam; follows anarc concentric with the hinge Y40. Therefore, it will be recognized thatthis trunnions 12 will follow a path 13 when the forward end `of thewalking beam travels upwardly. This in ordinary circumstances causes.the polish rod to be bent considerably to one side. It will be furtherrecognized that at the start of the upward stroke of the walking'beam,the defiection is relatively small, but as the end of the stroke isreached, the flexure or disalignment is considerably in-v creased.Therefore, if the point indicated by thetrunnions 12 were to bereciprocated through a very short distance substantially upon thehorizontal axis A-A, the iexure in the polished rod would besubstantially imperceptible.

It is the idea of my invention to provide a .means which will come intoplay -as the trunnions 12 move beyond the limits of the `short traveljust discussed and will prevent the lateral pull exerted by thetrunnions 12 as they travel over the path 13 from deflecting the suckerrod. The strut member 33 accomplishes this result.

It will be noticed that the point of engagement, otherwise the shaft 21,is situated below the axis A-A,Ytherefore, at the initial part of theupward stroke, the shaft 21 would travel forwardly along the arc 50,were it not for the play allowed between' the pin 37, Fig. 1 and thebottom of the slots 31. VInstead of moving outwardly along the are`50,the shaft 21 may move upwardly-.un-

til the axis A--A is nearly reached, where-y ment of the trunnions, 12in traversing the` arc 13. .,The'relative positions of the suspensionmeans, otherwise the bars 20, and

the strut means 33 are shown in dotted lines in Fig. 1.

The hanger plate 15 may be lifted from the walking beam by engaging theeye 57, Fig. 2 and thepin 37 will slip readily from the open slots 31,thus permitting the hanger to be yhoisted out of the way by -use oftackle, without necessity of removing bolts or nuts.r This equipment isvery simplein construction and confines the exure of the sucker rod" tovery small limits', thereby reducing the uneven wear and vthe harmfuleffects of constant flexure to a minimum.

Iclaim as my invention: 1. In a sucker vrod hanger arranged to maintainsubstantial alignment of theypolish rd, the combination of: a shafthanging means extendingvertically downwardly from the end oflawalkingbeam pivotally .connected at the lower end to said shaft;

- maintain substantial alignment of the poland a rigid diagonal strutypivotally con- .nectedfto said shaft and, extendingv therefrom to aninterior pointi on saidwalking beam.; and meansv permitting aV limitedmoveish. rod, the combination of: hanging means extending vertically'downwardly from the end of a walking beam; and' strut means extendingbetween the lower end of said hanging means and an interior point onsaidwalking beam, said strut means being limited in its movement byengagement withv the walking beam and arranged to provide a relativelysmall relative movement between the lower end of said hanging means andsaid interior point on said Walking beam. i

3. In a sucker rod hanger arranged to maintain substantial alignment ofthe polish rod, the combination of: hanging means ex-l tendingvertically` downwardly from the end 0f a walking beam; a fixturehaving'v a slot, nnounted at an interior position on said walking beam;and a strutanember having one end secured to the lower end of saidhanging means and the other end received in the slot of said fixture.

4.*In a sucker rod hanger arranged to maintain substantial ,alignment ofthe polish rod, the combination 0f: hanging means ex-- tendingvertically downwardly from the end of a walking beam; afixture mountedon said walking beam having a slot, said slot being open at the outerend; and a strut member extending'between the lower end of said hangingmeans and said fixture, said strut member being pivotally secured tosaid hanging means and being removably/secured to said fixture by meansof a pin, said pin resting in said slots of said fixture.

5. In a sucker rod hanger arranged to maintain substantial alignment ofthe polish rod, thecombination of, a Walking beam, trunnions mounted onsaid walking beam, a shaft, a strap on each side ofthe walking beampivotally mounted at their upper ends on said trunnions and at theirlower ends on said shaft, a sucker rod yoke, a second i pair of strapspivotally connected at their vupper ends on said shaft, and at theirlower ends on vsaid trunnion,` and strut means pivotally connected tosaid shaft at one end and movably connected to said walking beam-at theotherend. f

6. In a suckenrod hanger arranged to maintain substantial alignment ofthepolish rod', the combination of, a walkin/g beam, trunnions mountedAon said walking beam, a shaft, a strap on each side of the Walking beampivotally mounted at their upper 4ends `on said trunnions and at their'lower ends on said4 shaft, means connecting said shaft with the suckerrod, land strut means pivot- .ally connected to said shaft at one endand movably connected to said walking beam at the other 'endlyIn'testimonywhereof, I have hereunto setmy hand at Los Angeles,California, `this 8th day of February, 1924.

GEORGE H. PROUT.

